Battery with remaining electrical power display function and method of the same
US7420374B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Dec 10, 2004 |
| Grant date | Sep 2, 2008 |
| Priority date | — |
| Expiry date | Oct 16, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0048
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This invention provides an electronic device that has a battery with a power storage unit and a display module, a power detector and a display control module. The power storage unit is for storing electrical power and the display module is placed on the surface of the battery. The power detector is selectively coupled to the battery, and generates a remaining power signal after detecting the remaining power in the battery. The remaining power signal is used to control the display control module. When the power detector is selectively coupled to the battery, the display module shows the current remaining power in response to the action of the display control module. When the power detector is separated from the battery, the display module is essentially capable of maintaining the showing of remaining power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.